Four weeks before the referendum on Scottish independence and you could not fail to be aware that Glasgow was electrified by the greatest political debate for decades.

There were saltires everywhere and windows in every street proudly displayed posters, most of them backing Yes.

With less than a month to go before we take a historic decision on our continued membership of the European Union the political atmosphere in the city could not be more different.

Walking through the city centre and the west end this week, it was impossible to find a single visual clue that we were on the verge of such a potentially cataclysmic event.

Ironically, an early heatwave made Glasgow feel more European than ever. Customers from cafes and bars spilled out on to the baking streets, the smell of coffee and food adding to the intoxicating atmosphere. Office workers took off their jackets, loosened their ties or unbuttoned their blouses.

Buskers attracted happy crowds at the top of Buchanan Street, although this week it was with the strains of Walk The Moon's Shut Up And Dance rather than 2014 favourites such as Caledonia and Something Inside So Strong.

Byres Road wasn't so different from areas of Barcelona and Paris, even down to La Femme's beguiling It's Time to Wake Up playing in a local breakfast bar.

A European soundtrack for a sun kissed Euro city ... But the European debate has in almost every sense entirely passed Glasgow by.

In George Square, the throbbing heart of the city's Yes movement, there was not a Euro poster to be seen, from either side.

The lampposts on the edges of the square carried only tattered leftover stickers from the Scottish general election campaign, the message to voters to use their second votes from Tommy Sheridan and Solidarity as ignored last week as it was in the election itself.

An indyref2 sticker had been placed strategically on the plinth of the Prince Albert statue on the square. Another reference to the 2014 referendum - advocating Bairns not Bombs - adorned a lampost in Buchanan Street. But mentions of Europe ? There was none.

For months now we have been promised the positive case for Europe which would finally kick the debate into action. With a few notable exceptions that positive case has gone decidedly AWOL.

Worse, it's not even clear who is supposed to deliver it.

The campaign to persuade Scotland to remain in Europe has been so terrified of repeating the disastrous mistakes of the independence referendum - mistakes which all but destroyed the Labour Party north of the border - that it has been hamstrung from the off.

The main cross-party campaigning organisation is Scotland Stronger in Europe, an organisation devoid of any serving politicians.

Political parties will run their own campaigns, allowing them to avoid sharing a platform with hated enemies and thus alienating their own core supporters.

I ran into immediate difficulties trying to find the Scotland Stronger in Europe website. A Google search took me to a page within the strongerin.co.uk.

The Scottish campaign does have a webpage, which lists upcoming events. Top billing goes to an EU referendum debate in Huntly . Other events mainly consist of leafleting around the country.

It's a little underwhelming.

The Scottish Labour homepage includes a number of pro-Europe blogs, which are actually pretty basic press releases or previously published articles. It includes upcoming events too, less leafleting more doorknocking.

If the Scottish Lib Dems homepage makes any mention of Europe at all, I'm afraid I failed to find it. If you search the internet for long enough - and frankly, life is just too short - you'll find Scottish leader Willie Rennie pledging to make - guess what - a positive case for Europe.

Given that the whole EU referendum is pretty much the Tory civil war made flesh, it's hardly surprising it's not mentioned either on the homepage of the Scottish Conservatives.

No room on the front page of snp.org either - although first minister Nicola Sturgeon recently joined up with Wales' Plaid Cymru leader Leanne Wood and Green Caroline Lucas to make yet another plea for a positive case.

Suggestions to SNP people that we've been waiting rather a long time for the full details of this 'positive case' are generally met with the response that it has been difficult to do so while fighting a general election. But time is running out.

Honourable exceptions have been SNP MEPs Alyn Smith and Ian Hudghton, (whose Scotland in Europe website and The Wee Bleu Book are actually pretty good attempts to answer people's questions about Europe) and Alex Salmond whose passionate support for immigration was a highlight of a recent Question Time.

Salmond, of course, came under ridiculous attack from Willie Rennie, who suggested that the former first minister's decision to answer a question about the implications of Brexit for Scottish independence meant he was damaging the Remain case and should step down.

It's nonsense like that, together with a reliance of evermore ludicrous Project Fear tactics that have blunted the Remain campaign and squandered the opportunity to make the EU referendum a proper debate which captured the public attention.

But politicians of all parties knew that Europe would be a hard sell way before the referendum campaign started. They knew it would be difficult to raise passions over a subject most people cared so little about. But they simply didn't try hard enough.

The Remain campaign has been dull and perfunctory, when it has not been ludicrously overblown.

It shouldn't have been that hard. I found the positive case walking in Glasgow's west end one sunny morning last week. Teeming streets, different accents coming from all directions, people of all ethnicities relaxing, laughing, enjoying themselves and each other's company.

People DO make Glasgow ... and those people have come from all over the world to make this city and this country their home.

People make the case for Europe too. It's time for the Remain side to wake up and make that case.

It has just weeks to show enough imagination and energy to make sure that the pro- Europe vote they so complacently take for granted is actually delivered.

And yes, if Scotland votes to stay in Europe and the rest of the UK votes to leave we'll probably be staring a constitutional crisis in the face ... But that's a whole other story.